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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:140362
[Rus]
Version
1
Class
patch
ALTXid
337230
Language
English
Severity
High
Title
MGASA-2020-0380 -- security update for samba
Description
When Samba is used as a domain controller, an unauthenticated attacker on the network can gain administrator access by exploiting a netlogon protocol flaw. Note that Samba installations are not vulnerable unless they have the smb.conf lines 'server schannel = no' or 'server schannel = auto'.
Family
unix
Platform
Mageia 7
Product
samba
Reference
VENDOR: MGASA-2020-0380
VENDOR: MGASA-2020-0380
Id:
MGASA-2020-0380
Reference:
https://advisories.mageia.org/MGASA-2020-0380.html
CVE: CVE-2020-1472
CVE: CVE-2020-1472
Id:
CVE-2020-1472
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1472
Comment
: An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC). An attacker who successfully exploited the vulnerability could run a specially crafted application on a device on the network. To exploit the vulnerability, an unauthenticated attacker would be required to use MS-NRPC to connect to a domain controller to obtain domain administrator access. Microsoft is addressing the vulnerability in a phased two-part rollout. These updates address the vulnerability by modifying how Netlogon handles the usage of Netlogon secure channels. For guidelines on how to manage the changes required for this vulnerability and more information on the phased rollout, see How to manage the changes in Netlogon secure channel connections associated with CVE-2020-1472 (updated September 28, 2020). When the second phase of Windows updates become available in Q1 2021, customers will be notified via a revision to this security vulnerability. If you wish to be notified when these updates are released, we recommend that you register for the security notifications mailer to be alerted of content changes to this advisory. See Microsoft Technical Security Notifications.
CVSSv2 Score:
9.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
COMPLETE
Integrity impact:
COMPLETE
Availability impact:
COMPLETE
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSSv3 Score:
5.5
Attack vector:
LOCAL
Attack complexity:
LOW
Privileges required:
LOW
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
HIGH
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE:
330 (Use of Insufficiently Random Values)
References:
N/A (N/A)
http://packetstormsecurity.com/files/159190/Zerologon-Proof-Of-Concept.html (MISC)
VU#490028 (CERT-VN)
[oss-security] 20200917 Samba and CVE-2020-1472 ("Zerologon") (MLIST)
USN-4510-1 (UBUNTU)
https://www.synology.com/security/advisory/Synology_SA_20_21 (CONFIRM)
USN-4510-2 (UBUNTU)
openSUSE-SU-2020:1513 (SUSE)
openSUSE-SU-2020:1526 (SUSE)
USN-4559-1 (UBUNTU)
http://packetstormsecurity.com/files/160127/Zerologon-Netlogon-Privilege-Escalation.html (MISC)
[debian-lts-announce] 20201123 [SECURITY] [DLA 2463-1] samba security update (MLIST)
GLSA-202012-24 (GENTOO)
https://www.oracle.com/security-alerts/cpuApr2021.html (MISC)
FEDORA-2020-0be2776ed3 ()
FEDORA-2020-77c15664b0 ()
FEDORA-2020-a1d139381a ()
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